MATLAB Set Operations

intersect(A,B)

Set the intersection of two arrays; return the common values of A and B. The returned values are in sorted order.

intersect(A,B,'rows')

Treat each row of A and each row of B as a single entity, and return the common rows of A and B. The rows of the matrix are returned in sorted order.

ismember(A,B)

Returns an array of the same size as A, containing1（true），if the elements of A are found in B. Elsewhere, it returns 0（false）.

ismember(A,B,'rows')

Treat each row of A and each row of B as a single entity, and return containing1(true) vector, where the rows of matrix A are also the rows of B. Elsewhere, it returns 0(false).

issorted(A)

如果元素按排序顺序排列，则返回逻辑1(true)，否则返回逻辑0(false)。输入A可以是向量，也可以是N×1或1×N的字符串单元格数组。如果A和sort(A)的输出相等，则认为A被排序。

issorted(A, 'rows')

issorted(A)1If the elements are arranged in sorted order, then return logical

(true), otherwise return logical 0(false). The input A can be a vector or an N×

or

×N string cell array. If A and sort(A) are equal, then A is considered sorted.

issorted(A, 'rows')

If the rows of the two-dimensional matrix A are sorted in order, then return logical

(true), otherwise return logical 0(false). If the output of A and sortrows(A) is equal, then the matrix A is considered sorted.

setdiff(A,B)

Set the difference of two arrays; return the values in A, not in B. The values in the returned array are in sorted order.

setdiff(A,B,'rows')

Treat each row of A and each row of B as a single entity, and return the rows not in B from A. The rows of the returned matrix are in sorted order.

The 'rows' option does not support unit arrays.